Road and bridge construction flatness measuring device and measuring method

Abstract

The invention discloses a road bridge construction flatness measuring device and method, and the device comprises a supporting frame which is of a three-dimensional truss structure formed by welding a transverse main beam, a longitudinal auxiliary beam, a vertical column and a crossed reinforcing rib, the top of the crossed reinforcing rib is provided with a supporting seat, and the supporting seat is provided with a controller; the mechanical guide mechanisms are arranged on the two sides of the bottom of the supporting frame and comprise guide wheel frames and transmission shafts, the transmission shafts are rotationally connected to the guide wheel frames through bearings, and the transmission shafts are fixedly sleeved with guide wheels; the self-adaptive contact mechanism is arranged at the top of the guide wheel frame; the supporting linkage adjusting assembly comprises a containing seat and a limiting seat; a continuous detection belt is formed through the guide wheels on the two sides, the guide columns of the self-adaptive contact mechanism are kept in contact with the road surface, the road surface can be continuously scanned along with walking of the device, the defect that a large-area area can be covered only by adjusting the position multiple times in a traditional method is overcome, and full-section data collection is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of road and bridge construction, and specifically provides a road and bridge construction flatness measurement device and a measurement method. Background Art

[0002] The flatness detection after road and bridge construction is a key link to ensure project quality and driving safety. At present, there are various detection devices in the industry. For example, the "road and bridge construction flatness measurement device" disclosed in Chinese Patent CN114016361B has a technical solution including a basic component, a counterweight seat, moving wheels, and an alignment component. The linear actuator drives the movable plate to drive the scale and the guide rod for vertical displacement measurement. The universal wheels are used to contact the ground and the unevenness value is read through the scale of the ruler. This device simplifies the traditional manual squatting measurement process through a mechanical structure, but still has the following technical limitations: The device relies on the single-point or linear contact between the scale and the guide rod. For example, the vertical alignment of the alignment plate and the scale can only detect the flatness of local points or a single path. For large areas, the position needs to be adjusted multiple times, resulting in low detection efficiency and difficulty in covering the full cross-section data. Moreover, there are inevitably small gravels on the road surface, and the rigid contact of the marking pen causes wear, resulting in errors in flatness measurement. Summary of the Invention

[0003] The purpose of the present invention is to provide a road and bridge construction flatness measurement device and a measurement method to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A road and bridge construction flatness measurement device, which includes a support frame welded into a three-dimensional truss structure by a transverse main beam, longitudinal secondary beams, vertical columns, and cross stiffeners. A support seat is arranged at the top of the cross stiffeners, and a controller is arranged on the support seat; A mechanical guiding mechanism is arranged on both sides of the bottom of the support frame, including a guiding wheel frame and a transmission shaft. The transmission shaft is rotatably connected to the guiding wheel frame through bearings, and guiding wheels are fixedly sleeved on the transmission shaft; An adaptive contact mechanism is arranged on the top of the guiding wheel frame, including a guiding column fixedly connected to the top of the guiding wheel frame. A fixed frame is arranged on the support frame, and the bottom end of the support frame penetrates through the fixed frame and the support frame. A contact ring is arranged on the guiding column, and a spring pressure gauge is arranged on the top of the contact ring; A marking component is arranged on one side of the fixed frame, including a fixing plate. A marking pen is slidably inserted into the fixing plate. A guiding frame is arranged on the top of the fixing plate. A cylinder is arranged on the top of the marking pen, and the cylinder is located on the top of the guiding frame. A contact plate is fixedly sleeved on the marking pen; The support linkage adjustment assembly includes a receiving seat and a limiting seat. The receiving seat is fixedly connected to the top of the support frame, and the limiting seat is fixedly connected to the top of the fixing plate.

[0005] Preferably, the spring pressure gauge includes a sensing plate and a pressure gauge body. A contact spring is sleeved on the guide post, and the contact spring is located between the sensing plate and the fixed frame.

[0006] Preferably, an installation plate is provided at the opening of the receiving seat. A contact post is slidably inserted into the installation plate. A first cylindrical airbag is arranged between the contact post and the receiving seat, and a communication pipe is arranged on one side of the first cylindrical airbag.

[0007] Preferably, a groove is formed in the limiting seat. A round block is provided at the opening of the groove. A top rod is slidably inserted into the round block. The top of the top rod is in close contact with the contact plate. A second cylindrical airbag is arranged between the top rod and the groove, and the second cylindrical airbag is communicated with the communication pipe.

[0008] Preferably, the contact post has a "T" - shaped structure, and the end is in close contact with the contact ring.

[0009] Preferably, the flatness measuring device further includes a cleaning mechanism, which is arranged on one side of the guide post and includes an extension frame fixedly sleeved on the guide post. A guide rod is slidably inserted into the extension frame. An installation seat is arranged at the bottom of the guide rod, and a cleaning brush is arranged at the bottom of the installation seat.

[0010] Preferably, a support plate is arranged on one side of the extension frame. The top of the guide rod penetrates through the support plate. A limiting ring is fixedly sleeved on the guide rod. A support spring is sleeved on the guide rod and is located between the support plate and the limiting ring.

[0011] Preferably, the spring pressure gauge is electrically connected to the controller, and the contact ring is fixedly connected to the sensing plate.

[0012] Preferably, a driving motor is arranged at one end of the transmission shaft, and the driving motor is electrically connected to the controller.

[0013] A measuring method for a flatness measuring device for road and bridge construction, which is applied to a flatness measuring device for road and bridge construction. The measuring method includes the following steps: S1: The controller generates an instruction according to a preset path. The driving motor drives the guide wheels on both sides to achieve linear scanning. An encoder built in the transmission shaft real - time feeds back the traveling distance. S2: The guide post of the adaptive contact mechanism slides up and down with the unevenness of the road surface. The compression amount of the contact spring is quantified by scale marks. The strain - gauge sensor of the spring pressure gauge real - time collects the pressure value. S3: At the same time, the cleaning brush contacts the road surface under the action of the support spring, thereby cleaning the sundries in the area. S4: When the road surface is concave and the guide column moves downward, the abutting ring pushes the abutting column, and the abutting column squeezes the first cylindrical airbag. The first cylindrical airbag compresses, causing the gas inside it to be transmitted to the second cylindrical airbag through the connecting pipe. The second cylindrical airbag expands and pushes the ejector rod upward. The ejector rod abuts against the abutting plate and moves upward, causing the displacement of the ejector rod to be converted into the lifting action of the marker pen through the guide frame.

[0014] S5: The air cylinder receives the command from the controller to make the marker pen mark with a constant contact force.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention forms a continuous detection belt through the guide wheels on both sides, and the guide column of the adaptive contact mechanism remains in contact with the road surface. As the device moves, it can continuously scan the road surface, avoiding the drawback of the traditional method that requires multiple position adjustments to cover a large area, and realizing the acquisition of full-section data.

[0016] 2. The present invention forms a pressure adjustment system composed of an abutting spring and a spring pressure gauge, which can dynamically adjust the contact pressure according to the road surface conditions, avoid the wear caused by the rigid contact of the marker pen, and improve the accuracy and stability of the measurement.

[0017] 3. The cleaning brush of the present invention continuously adheres to the road surface through an elastic support structure to remove particulate matter, ensuring the cleanliness of the measurement area. The design of the extension frame guide rod supports the follow-up undulation of the cleaning mechanism, adapts to a certain change in the road surface slope, and realizes full-section continuous detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the road and bridge construction flatness measuring device of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the bottom of the flatness measuring device of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the adaptive contact mechanism of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the marking component of the present invention.

[0022] Figure 5 It is a schematic structural diagram between the support frame and the adaptive contact mechanism of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the cleaning mechanism of the present invention.

[0024] Figure 7 It is a sectional view of the accommodation seat of the present invention.

[0025] Figure 8 For the present inventionFigure 7 Schematic diagram of the enlarged structure at position A in the [object].

[0026] Figure 9 Cross-sectional view of the limit seat of the present invention.

[0027] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at position B in the [object].

[0028] In the figure: support frame 1; vertical column 11; support seat 12; cross reinforcing rib 13; controller 14; adaptive contact mechanism 2; fixing frame 21; guide post 22; spring pressure gauge 23; abutting ring 24; abutting spring 25; mechanical guiding mechanism 3; guide wheel frame 31; transmission shaft 32; guide wheel 33; marking assembly 4; fixing plate 41; marking pen 42; air cylinder 43; guide frame 44; abutting plate 45; support linkage adjustment assembly 5; receiving seat 51; mounting plate 52; abutting column 53; first cylindrical airbag 54; connecting pipe 55; limit seat 56; round block 57; ejector rod 58; second cylindrical airbag 59; cleaning mechanism 6; extension frame 61; guide rod 62; mounting seat 63; cleaning brush 64; limit ring 65; support plate 66; support spring 67. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 Schematic diagram of the structure of the road and bridge construction flatness measuring device of the present invention. The present invention provides a technical solution: a road and bridge construction flatness measuring device, which includes a support frame 1, which is welded into a three-dimensional truss structure by a transverse main beam, a longitudinal secondary beam, a vertical column 11 and a cross reinforcing rib 13. A support seat 12 is welded to the top of the cross reinforcing rib 13, and a controller 14 is fixedly installed on the support seat 12; Figure 2 Schematic diagram of the structure at the bottom of the flatness measuring device of the present invention. Mechanical guiding mechanisms 3 are arranged on both sides of the bottom of the support frame 1, including a guide wheel frame 31 and a transmission shaft 32. The transmission shaft 32 is rotatably connected to the guide wheel frame 31 through a bearing. A guide wheel 33 is fixedly sleeved on the transmission shaft 32. One end of the transmission shaft 32 is fixedly installed with a driving motor, and the driving motor is electrically connected to the controller 14. The model of the driving motor can be selected according to the actual working conditions.

[0031] The double guide wheels 33 and the driving motor combination form a closed-loop control system. The controller 14 adjusts the wheel speed difference on both sides in real time to achieve path correction. The transmission shaft 32 adopts a hollow shaft design, and an encoder is built in and directly connected to the driving motor to achieve accurate feedback of the traveling distance. The driving motor synchronously drives the guide wheels 33 on both sides through the transmission shaft 32, enabling the device to automatically travel along a predetermined path, improving the detection speed compared with manual pushing.

[0032] Figure 3 It is a schematic structural diagram of the adaptive contact mechanism of the present invention. Figure 5 It is a schematic structural diagram between the support frame and the adaptive contact mechanism of the present invention. An adaptive contact mechanism 2 is provided at the top of the guide wheel frame 31, including a guide post 22. The guide post 22 is fixedly connected to the top of the guide wheel frame 31. A fixed frame 21 is fixedly connected to the support frame 1. The bottom end of the support frame 1 penetrates through the fixed frame 21 and the support frame 1. A contact ring 24 is fixedly sleeved on the guide post 22. A spring pressure gauge 23 is installed on the top of the contact ring 24. The spring pressure gauge 23 includes an induction plate and a pressure gauge body. The induction plate adopts a strain gauge sensor. The spring pressure gauge 23 is electrically connected to the controller 14. The contact ring 24 is fixedly connected to the induction plate. A contact spring 25 is sleeved on the guide post 22. The contact spring 25 is located between the induction plate and the fixed frame 21. The guide post 22 and the fixed frame 21 form a sliding pair. The guide post 22 of the adaptive contact mechanism 2 generates an axial displacement with the undulation of the road surface.

[0033] Scale marks are provided on the fixed frame 21. The compression amount of the contact spring 25 reflects the local concavity and convexity height. The pointer reading of the spring pressure gauge 23 records the pressure difference. When one side of the guide wheel 33 encounters a depression, the guide post 22 moves downward, causing the contact spring 25 to compress the induction plate, and the pressure gauge value on the spring pressure gauge 23 suddenly increases, triggering the controller 14 to record the height difference. The controller 14 can identify local particulate matter interference through the double-measurement point dynamic pressure comparison algorithm to avoid misjudgment.

[0034] Figure 4 It is a schematic structural diagram of the marking component of the present invention. The marking component 4 is provided on one side of the fixed frame 21, including a fixing plate 41. A marking pen 42 is slidably inserted into the fixing plate 41. A guide frame 44 is fixedly connected to the top of the fixing plate 41. A cylinder 43 is installed on the top of the marking pen 42. The telescopic end of the cylinder 43 is fixedly connected to the marking pen 42. The cylinder 43 is located on the top of the guide frame 44. A contact plate 45 is fixedly sleeved on the marking pen 42. The cylinder 43 drives the marking pen 42 to move vertically in the guide frame 44.

[0035] Figure 7 It is a cross-sectional view of the accommodation seat of the present invention. Figure 8 For the present invention Figure 7Schematic diagram of the enlarged structure at position A in the present invention. The support linkage adjustment assembly 5 includes a receiving seat 51 and a limiting seat 56. The receiving seat 51 is fixedly connected to the top of the support frame 1, and the limiting seat 56 is fixedly connected to the top of the fixing plate 41. An installation plate 52 is arranged at the opening of the receiving seat 51. The installation plate 52 is fixed to the receiving seat 51 by bolts. A contact column 53 is slidably inserted into the installation plate 52. The contact column 53 has a "T" - shaped structure, and its end is in contact with the contact ring 24. A first cylindrical airbag 54 is bonded between the contact column 53 and the receiving seat 51. One side of the first cylindrical airbag 54 is connected to a connecting pipe 55.

[0036] Figure 9 Cross - sectional view of the limiting seat of the present invention. Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at position B in the present invention. A groove is provided on the limiting seat 56. A round block 57 is arranged at the opening of the groove. The round block 57 is fixed to the limiting seat 56 by bolts. A push rod 58 is slidably inserted into the round block 57. The top of the push rod 58 is in contact with the contact plate 45. The coupling design of the contact plate 45 and the push rod 58 enables the marking pressure to be within an adjustable range. A second cylindrical airbag 59 is bonded between the push rod 58 and the groove. The second cylindrical airbag 59 is connected to the connecting pipe 55. The model specifications of the first cylindrical airbag 54 and the second cylindrical airbag 59 can be selected according to the actual working conditions.

[0037] When the guide post 22 moves downward, the contact ring 24 pushes the T - shaped contact column 53. The contact column 53 squeezes the first cylindrical airbag 54. The first cylindrical airbag 54 is compressed, and the gas inside it is transmitted to the second cylindrical airbag 59 through the connecting pipe 55. The second cylindrical airbag 59 expands and pushes the push rod 58 upward. The push rod 58 abuts against the contact plate 45 and moves upward, so that the displacement of the push rod 58 is converted into the lifting action of the marking pen 42 through the guide frame 44, avoiding the wear caused by the rigid contact of the marking pen 42 affected by local unevenness before measurement, which is beneficial to the service life of the marking pen 42.

[0038] Figure 6 Schematic diagram of the cleaning mechanism of the present invention. The flatness measuring device further includes a cleaning mechanism 6, which is arranged on one side of the guide post 22. It includes an extension frame 61. The extension frame 61 is fixedly sleeved on the guide post 22. A guide rod 62 is slidably inserted into the extension frame 61. The bottom of the guide rod 62 is fixedly connected to an installation seat 63. A cleaning brush 64 is bonded to the bottom of the installation seat 63. One side of the extension frame 61 is fixedly connected to a support plate 66. The top of the guide rod 62 passes through the support plate 66. A limit ring 65 is fixedly sleeved on the guide rod 62. A support spring 67 is sleeved on the guide rod 62 and is located between the support plate 66 and the limit ring 65.

[0039] The cleaning brush 64 adopts an interlaced weaving structure of nylon and steel wires. The support spring 67 and the limit ring 65 form an abutting and buffering structure. The guide rod 62 has an up-and-down sliding space within the extension frame 61 to ensure that the cleaning brush 64 always contacts the road surface, thereby cleaning the sundries in the area.

[0040] The measuring method comprises the following steps: S1: The controller 14 generates instructions according to a preset path, drives the motor to drive the guide wheels 33 on both sides, realizes linear scanning, and the encoder built in the transmission shaft 32 feeds back the traveling distance in real time; S2: The guide posts 22 of the adaptive contact mechanism 2 slide up and down with the unevenness of the road surface. The compression amount of the abutting spring 25 is quantified by scale marks, and the strain gauge sensor of the spring pressure gauge 23 collects the pressure value in real time; S3: Meanwhile, the cleaning brush 64 contacts the road surface under the action of the support spring 67, thereby cleaning the sundries in the area; S4: When the road surface sinks, when the guide post 22 moves downward, the abutting ring 24 pushes the abutting post 53, and the abutting post 53 squeezes the first cylindrical airbag 54. The first cylindrical airbag 54 is compressed, so that the gas therein is transmitted to the second cylindrical airbag 59 through the communication pipe 55. The second cylindrical airbag 59 expands and pushes the ejector rod 58 to move upward. The ejector rod 58 abuts against the abutting plate 45 and moves upward, so that the displacement amount of the ejector rod 58 is converted into the lifting action of the marker pen 42 through the guide frame 44.

[0041] S5: The air cylinder 43 receives the instruction of the controller 14 to make the marker pen 42 mark with a constant contact force.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road and bridge construction flatness measurement device, characterized in that: The flatness measuring device includes a support frame (1), which is welded into a three-dimensional truss structure by a transverse main beam, longitudinal secondary beams, vertical columns (11) and cross stiffeners (13). A support seat (12) is provided at the top of the cross stiffeners (13), and a controller (14) is provided on the support seat (12). A mechanical guiding mechanism (3) is arranged on both sides of the bottom of the support frame (1), and includes a guiding wheel frame (31) and a transmission shaft (32). The transmission shaft (32) is rotatably connected to the guiding wheel frame (31) through bearings, and a guiding wheel (33) is fixedly sleeved on the transmission shaft (32). An adaptive contact mechanism (2) is arranged on the top of the guiding wheel frame (31), and includes a guiding column (22). The guiding column (22) is fixedly connected to the top of the guiding wheel frame (31). A fixing frame (21) is arranged on the support frame (1), and the bottom end of the support frame (1) penetrates through the fixing frame (21) and the support frame (1). An abutting ring (24) is arranged on the guiding column (22), and a spring pressure gauge (23) is arranged on the top of the abutting ring (24). A marking assembly (4) is arranged on one side of the fixing frame (21), and includes a fixing plate (41). A marking pen (42) is slidably inserted into the fixing plate (41). A guiding frame (44) is arranged on the top of the fixing plate (41). A cylinder (43) is arranged on the top of the marking pen (42). The cylinder (43) is located on the top of the guiding frame (44). An abutting plate (45) is fixedly sleeved on the marking pen (42). A support linkage adjustment assembly (5) includes a receiving seat (51) and a limiting seat (56). The receiving seat (51) is fixedly connected to the top of the support frame (1), and the limiting seat (56) is fixedly connected to the top of the fixing plate (41).

2. The flatness measurement device for road and bridge construction according to claim 1, characterized in that: The spring pressure gauge (23) includes an induction plate and a pressure gauge body. Abutting springs (25) are sleeved on the guiding column (22), and the abutting springs (25) are located between the induction plate and the fixing frame (21).

3. The flatness measurement device for road and bridge construction according to claim 1, wherein: An installation plate (52) is arranged at the opening of the receiving seat (51). An abutting column (53) is slidably inserted into the installation plate (52). A first cylindrical airbag (54) is arranged between the abutting column (53) and the receiving seat (51). A connecting pipe (55) is arranged on one side of the first cylindrical airbag (54).

4. The flatness measuring device for road and bridge construction according to claim 3, characterized in that: A groove is formed in the limiting seat (56). A round block (57) is arranged at the opening of the groove. A push rod (58) is slidably inserted into the round block (57). The top of the push rod (58) is in close contact with the abutting plate (45). A second cylindrical airbag (59) is arranged between the push rod (58) and the groove. The second cylindrical airbag (59) is communicated with the connecting pipe (55).

5. The flatness measuring device for road and bridge construction according to claim 3, characterized in that: The abutting column (53) has a "T" - shaped structure, and the end is in close contact with the abutting ring (24).

6. The flatness measuring device for road and bridge construction according to claim 1, characterized in that: The flatness measurement device further includes a cleaning mechanism (6), which is arranged on one side of the guide post (22) and includes an extension frame (61). The extension frame (61) is fixedly sleeved on the guide post (22). A guide rod (62) is slidably inserted on the extension frame (61). An installation seat (63) is arranged at the bottom of the guide rod (62), and a cleaning brush (64) is arranged at the bottom of the installation seat (63).

7. The flatness measurement device for road and bridge construction according to claim 6, characterized in that: A support plate (66) is arranged on one side of the extension frame (61). The top of the guide rod (62) penetrates through the support plate (66). A limit ring (65) is fixedly sleeved on the guide rod (62). A support spring (67) is sleeved on the guide rod (62), and the support spring (67) is located between the support plate (66) and the limit ring (65).

8. The flatness measurement device for road and bridge construction according to claim 2, wherein: The spring pressure gauge (23) is electrically connected to the controller (14), and the abutting ring (24) is fixedly connected to the induction plate.

9. The flatness measuring device for road and bridge construction according to claim 1, wherein: One end of the transmission shaft (32) is provided with a driving motor, and the driving motor is electrically connected to the controller (14).

10. A measuring method for a flatness measuring device of a road and bridge construction, characterized in that: This measurement method is applied to a road and bridge construction flatness measurement device as described in any one of claims 1-9. The measurement method includes the following steps: S1: The controller (14) generates an instruction according to a preset path, and the driving motor drives the guide wheels (33) on both sides to achieve linear scanning. The encoder built in the transmission shaft (32) feeds back the traveling distance in real time; S2: The guide post (22) of the adaptive contact mechanism (2) slides up and down with the unevenness of the road surface. The compression amount of the abutting spring (25) is quantified by scale marks, and the strain gauge sensor of the spring pressure gauge (23) collects the pressure value in real time; S3: At the same time, the cleaning brush (64) contacts the road surface under the action of the support spring (67), and then cleans the sundries in the area; S4: When the road surface sinks and the guide post (22) moves downward, the abutting ring (24) pushes the abutting column (53), and the abutting column (53) squeezes the first cylindrical airbag (54). The first cylindrical airbag (54) is compressed, and the gas in it is transmitted to the second cylindrical airbag (59) through the connecting pipe (55). The second cylindrical airbag (59) expands and pushes the ejector rod (58) to move upward. The ejector rod (58) abuts against the abutting plate (45) and moves upward, so that the displacement amount of the ejector rod (58) is converted into the lifting action of the marking pen (42) through the guide frame (44); S5: The air cylinder (43) receives an instruction from the controller (14) to make the marking pen (42) mark with a constant contact force.

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